import turtle,math

turtle.hideturtle()

turtle.penup()
turtle.goto(-200,0)
turtle.pendown()
turtle.goto(200,0)

turtle.penup()
turtle.goto(190,10)
turtle.pendown()
turtle.goto(200,0)
turtle.goto(190,-10)

turtle.penup()
turtle.goto(0,-70)
turtle.pendown()
turtle.goto(0,70)

turtle.penup()
turtle.goto(-10,60)
turtle.pendown()
turtle.goto(0,70)
turtle.goto(10,60)



turtle.penup()
turtle.goto(-100,-15)
turtle.pendown()
turtle.write("-2\u03c0")

turtle.penup()
turtle.goto(100,-15)
turtle.pendown()
turtle.write("2\u03c0")

turtle.penup()
turtle.goto(-175,50)
turtle.pendown()

for x in range(-175,176):
    y = 50*math.sin( ( x/100 ) * 2 * math.pi)
    print(y)
    turtle.goto(x,y)




turtle.done()